Abstract
The first photochemical crosslinking of a protein to a nucleic acid using laser excitation is reported. A single, 120 mJ, 20 ns pulse at 248 nm crosslinks about 10% of bound E. coli RNA polymerase to T7 DNA under the conditions studied. The crosslinking yield depends on mercaptoethanol concentration, and is a linear function of laser intensity. The protein subunits crosslinked to DNA are beta, beta' and sigma.
MeSH Terms
DNA, Viral/metabolism,radiation effects
DNA-Directed RNA Polymerases/metabolism,radiation effects
Escherichia coli/enzymology
Kinetics
Lasers
Macromolecular Substances
Protein Binding
T-Phages/metabolism
Chemicals
DNA, Viral
Macromolecular Substances
DNA-Directed RNA Polymerases
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Harrison C A
Turner D H
Hinkle D C
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